2011/1/29 Krinkle krinklemail@gmail.com:
Op 29 jan 2011, om 17:29 heeft MZMcBride het volgende geschreven: Compare the following two pages (when logged out):
A nice example. A couple of others: http://en.wikipedia.org/wiki/File:Spider_internal_anatomy-en.svg http://en.wikipedia.org/wiki/File:Cross_section_jellyfish_en_%28edit%29.svg
These and many other SVG illustrations are included in the main article in a size that's too small to read. Clicking an image is the standard way that users are taught to enlarge images.
While a chequered background can be useful to visualize the alpha channel, we can reasonably posit for a general reference source like Wikipedia that the vast majority of users who enlarge images like the above do so to inspect details of the image, not to assess secondary image characteristics like file format or alpha channel, and indeed many of them likely have no understanding why the background is there to begin with. For those users the chequered background is simply useless noise.
The same is likely to apply in many (although of course not in all) contexts of third party MediaWiki use. A simple "show/hide transparency" toggle for media with an alpha channel would be a nice standard solution. Defaults for a media repository like Wikimedia Commons could reasonably differ from those for a general reference source like Wikipedia, as typical user intentions are likely different.